I want to make my own NES cartridge, but I don't know what the correct type of ROM chip would be.
I am specifically thinking about the simplest PCB that works, an NES-NROM-128 which consists of a 16 KiB PRG, and an 8 KiB CHR ROM, like Baseball:
I assume these are some kind of standard ROM Chip, so I wonder if there are current off-the-shelf chips (preferably EEPROMs so that programming is easy - by which I mean that pulling out the chip and putting it into a programmer is fine, but no UV windows or one-time burn process please) that I can just buy brand new.
And if yes, are they part of a standardized family, so that I could e.g., get a 32 KiB one if I want to make an NES-NROM-256, or a larger one if I find or make a mapper chip?
There's a bunch of EEPROMs on the market, but I'm thinking about stuff like voltage levels, compatible pinout to go directly to the edge connector without a mapper/glue chip, and speed/access times/latency (if that matters - I know if does with some SRAM chips, but no idea about ROM)
(I am ignoring the issue of the 10NES/CIC here, and I am not looking at solutions like Flash Carts - I want to make a "real" NES or Famicom cartridge. I also don't want to reprogram an existing ROM of a donor cart)